A program called m2ps is included in the directory "etc" of Mule. It converts multi-language files into PostScript format. Note that m2ps accepts only *internal* encoding of Mule.
m2ps uses BDF files of X as fonts. Characters are sent to printer as bitmaps, so you can get hardcopy of multi-language texts even if your printer does not support multi-language fonts. For further information, see the on-line manual (m2ps.1).